public override int VisitExpr_PLUSMINUS(firstParser.Expr_PLUSMINUSContext context)
{
ASTComposite m_parent = m_parents.Peek();
if (context.op.Type == firstParser.MINUS)
{
CASTSubtraction newnode = new CASTSubtraction(context.GetText(), nodeType.NT_SUBSTRACTION, m_parents.Peek(), 2);
m_parent.AddChild(newnode, m_parentContext.Peek());
m_parents.Push(newnode);
this.VisitElementInContext(context.expr(0), m_parentContext, contextType.CT_SUBSTRACTION_LEFT);
this.VisitElementInContext(context.expr(1), m_parentContext, contextType.CT_SUBSTRACTION_RIGHT);
}
else if (context.op.Type == firstParser.PLUS)
{
CASTAddition newnode = new CASTAddition(context.GetText(), nodeType.NT_ADDITION, m_parents.Peek(), 2);
m_parent.AddChild(newnode, m_parentContext.Peek());
m_parents.Push(newnode);
this.VisitElementInContext(context.expr(0), m_parentContext, contextType.CT_ADDITION_LEFT);
this.VisitElementInContext(context.expr(1), m_parentContext, contextType.CT_ADDITION_RIGHT);
}
m_parents.Pop();
return(0);
}
public override int VisitExpr_MULDIV(firstParser.Expr_MULDIVContext context)
{
ASTComposite m_parent = m_parents.Peek();
if (context.op.Type == firstParser.MULT)
{
CASTMultiplication newnode = new CASTMultiplication(context.GetText(), nodeType.NT_MULTIPLICATION, m_parents.Peek(), 2);
m_parent.AddChild(newnode, m_parentContext.Peek());
m_parents.Push(newnode);
this.VisitElementInContext(context.expr(0), m_parentContext, contextType.CT_MULTIPLICATION_LEFT);
this.VisitElementInContext(context.expr(1), m_parentContext, contextType.CT_MULTIPLICATION_RIGHT);
}
else if (context.op.Type == firstParser.DIV)
{
CASTDivision newnode = new CASTDivision(context.GetText(), nodeType.NT_DIVISION, m_parents.Peek(), 2);
m_parent.AddChild(newnode, m_parentContext.Peek());
m_parents.Push(newnode);
this.VisitElementInContext(context.expr(0), m_parentContext, contextType.CT_DIVISION_LEFT);
this.VisitElementInContext(context.expr(1), m_parentContext, contextType.CT_DIVISION_RIGHT);
}
m_parents.Pop();
return(0);
}
public T VisitChildren(ASTComposite node)
{
for (int i = 0; i < node.MChildren.Length; i++)
{
foreach (ASTElement item in node.MChildren[i])
{
item.Accept(this);
}
}
return(default(T));
}
public override int VisitCompileUnit(firstParser.CompileUnitContext context)
{
CASTCompileUnit newnode = new CASTCompileUnit(context.GetText(), nodeType.NT_COMPILEUNIT, null, 1);
m_root = newnode;
m_parents.Push(newnode);
this.VisitElementsInContext(context.expr(), m_parentContext, contextType.CT_COMPILEUNIT_EXPRESSIONS);
m_parents.Pop();
return(0);
}
public override int VisitExpr_ASSIGNMENT(firstParser.Expr_ASSIGNMENTContext context)
{
ASTComposite m_parent = m_parents.Peek();
CASTAssignment newnode = new CASTAssignment(context.GetText(), nodeType.NT_ASSIGNMENT, m_parents.Peek(), 2);
m_parent.AddChild(newnode, m_parentContext.Peek());
m_parents.Push(newnode);
this.VisitTerminalInContext(context, context.IDENTIFIER().Symbol, m_parentContext, contextType.CT_ASSIGNMENT_LEFT);
this.VisitElementInContext(context.expr(), m_parentContext, contextType.CT_ASSIGNMENT_RIGHT);
m_parents.Pop();
return(0);
}
/// ###########################################################################|
/// ExtractSubgraphs ##########################################################|
/// ###########################################################################|
/// Αυτή η μέδοδος χωρίζει τα παιδιά σε περιοχές, ανάλογα με τον γωνέα τους ###|
/// ###########################################################################|
private void ExtractSubgraphs(ASTComposite node, contextType context)
{
if (node.MChildren[node.GetContextIndex(context)].Count != 0)
{
m_ostream.WriteLine("\tsubgraph cluster" + m_clusterSerial++ + "{");
m_ostream.WriteLine("\t\tnode [style=filled,color=white];");
m_ostream.WriteLine("\t\tstyle=filled;");
m_ostream.WriteLine("\t\tcolor=lightgrey;");
m_ostream.Write("\t\t");
for (int i = 0; i < node.MChildren[node.GetContextIndex(context)].Count; i++)
{
m_ostream.Write(node.MChildren[node.GetContextIndex(context)][i].MNodeName + ";");
}
m_ostream.WriteLine("\n\t\tlabel=" + context + ";");
m_ostream.WriteLine("\t}");
}
}
public override int VisitTerminal(ITerminalNode node)
{
ASTComposite m_parent = m_parents.Peek();
switch (node.Symbol.Type)
{
case firstLexer.NUMBER:
CASTNUMBER newnode1 = new CASTNUMBER(node.Symbol.Text, nodeType.NT_NUMBER, m_parents.Peek(), 0);
m_parent.AddChild(newnode1, m_parentContext.Peek());
break;
case firstLexer.IDENTIFIER:
CASTIDENTIFIER newnode2 = new CASTIDENTIFIER(node.Symbol.Text, nodeType.NT_IDENTIFIER, m_parents.Peek(), 0);
m_parent.AddChild(newnode2, m_parentContext.Peek());
break;
default:
break;
}
return(base.VisitTerminal(node));
}
public T Visit(ASTComposite node)
{
return(node.Accept(this));
}